Piston sealing arrangement for a cryogenic refrigerator

Patent · Tue Feb 21 00:00:00 EST 1984

OSTI ID:6899988

Green, G F; Humphrey, J C

A sealing arrangement for a rectilinear reciprocable piston within a cryogenic refrigerator comprising a buffer defined by dual O-rings disposed around the circumference of the piston and containing pressurized gas of the same type as the refrigeration gas. The buffer limits or prevents both the entrance of contaminants and also the escape of the refrigeration gas.

• Assignee: Secretary of the Navy
• Patent Number(s): US 4432556
• OSTI ID: 6899988
• Resource Relation: Patent File Date: Filed date 1 Jun 1983; Other Information: PAT-APPL-500117
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
REFRIGERATING MACHINERY
PISTONS
SEALS
DESIGN
CRYOGENICS
MACHINERY
420201* - Engineering- Cryogenic Equipment & Devices